from flask import Blueprint, render_template, request, redirect, url_for, current_app
from .extensions import db
from .models import Adresse, Frage, Antwort
from utils import generate_vcard
import re

bp = Blueprint('public', __name__)


@bp.route('/', methods=['GET', 'POST'])
def index():
    if request.method == 'POST':
        vorname = request.form.get('vorname', '').strip()
        nachname = request.form.get('nachname', '').strip()
        strasse = request.form.get('strasse', '').strip()
        hausnummer = request.form.get('hausnummer', '').strip()
        plz = request.form.get('plz', '').strip()
        ort = request.form.get('ort', '').strip()
        land = request.form.get('land', 'Deutschland').strip()
        telefon_vorwahl = request.form.get('telefon_vorwahl', '').strip()
        telefon_nummer = request.form.get('telefon_nummer', '').strip()
        email = request.form.get('email', '').strip()

        errors = {}
        email_re = re.compile(r"[^@]+@[^@]+\.[^@]+")
        if email:
            if not email_re.match(email):
                errors['email'] = 'Ungültige E-Mail-Adresse'
        if plz:
            if not re.fullmatch(r"\d{5}", plz):
                errors['plz'] = 'Postleitzahl muss genau 5 Ziffern haben'

        if errors:
            fragen = Frage.query.all()
            form = request.form.to_dict()
            return render_template('index.html', fragen=fragen, errors=errors, form=form)

        adresse = Adresse(
            vorname=vorname,
            nachname=nachname,
            strasse=strasse,
            hausnummer=hausnummer,
            plz=plz,
            ort=ort,
            land=land,
            telefon_vorwahl=telefon_vorwahl,
            telefon_nummer=telefon_nummer,
            email=email,
        )
        db.session.add(adresse)
        db.session.commit()

        fragen = Frage.query.all()
        for frage in fragen:
            key = f'frage_{frage.id}'
            antwort_text = request.form.get(key, '').strip()
            antwort = Antwort(adresse_id=adresse.id, frage_id=frage.id, text=antwort_text)
            db.session.add(antwort)
        db.session.commit()

        try:
            base_dir = current_app.config.get('BASE_DIR') if current_app.config.get('BASE_DIR') else getattr(current_app, 'BASE_DIR', '.')
            generate_vcard(adresse, base_dir)
        except Exception as e:
            current_app.logger.exception('Fehler beim Erzeugen der vCard for adresse id=%s: %s', adresse.id if hasattr(adresse, 'id') else 'unknown', e)

        return redirect(url_for('public.danke', id=adresse.id))

    fragen = Frage.query.all()
    return render_template('index.html', fragen=fragen)


@bp.route('/danke')
def danke():
    id = request.args.get('id')
    adresse = db.session.get(Adresse, int(id)) if id else None
    return render_template('danke.html', adresse=adresse)